<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像去 -->
      <div class="avator_box">
        <img
          src="../assets/logo.png"
          alt=""
        >
      </div>
      <!-- 登录区 -->
      <el-form
        ref="loginFormRef"
        :model="loginForm"
        :rules="loginFormRules"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            type="password"
            v-model="loginForm.password"
            prefix-icon="iconfont icon-lock_fill"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button
            type="primary"
            @click="Login"
          >登录</el-button>
          <el-button
            type="info"
            @click="resetLoginForm"
          >重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
import { getLogin } from '../api/login'
export default {
  data: () => ({
    // 这是登录表单的数据绑定对象
    loginForm: {
      username: 'admin',
      password: '123456'
    },
    loginFormRules: {
      //验证username是否合法
      username: [
        { required: true, message: '请输入用户名称', trigger: 'blur' },
        { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
      ],
      //验证passord是否合法
      password: [
        { required: true, message: '请输入用户密码', trigger: 'blur' },
        { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
      ]
    }
  }),
  methods: {
    resetLoginForm() {
      // console.log(this)
      this.$refs.loginFormRef.resetFields()
    },
    //表单预验证
    Login() {
      this.$refs.loginFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) return
        const { data: res } = await getLogin(this.loginForm)
        // console.log(res)
        if (res.meta.status !== 200) return this.$message.error('登录失败')
        this.$message.success('登录成功')
        //1.将登录成功后的token保存在sessionStorage中
        //    1.1 项目中除了登录以外的其他接口,必须在登录之后才能访问
        //    1.2 token只应在当前网站中生效,所以只能保存在sessionStorage
        console.log(res)
        window.sessionStorage.setItem('token', res.data.token)
        //2.通过编程式导航跳转到home页面
        this.$router.push('/home')

      })
    }
  }
};

</script>
<style lang="scss" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  height: 300px;
  width: 450px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  .avator_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
  .login_form {
    width: 100%;
    position: absolute;
    padding: 0 20px;
    box-sizing: border-box;
    bottom: 0;
  }
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>